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Finding the Fourth Proportional to 71,635.79, 98,860.48 and 39,804.61

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Solution

The fourth proportional to 71,635.79, 98,860.48 and 39,804.61 is: 54,932.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,635.79 : 98,860.48 = 39,804.61 : x
  2. Step 2: Convert to fraction form
    71,635.79/98,860.48 = 39,804.61/x
  3. Step 3: Cross multiply
    71,635.79x = 98,860.48 × 39,804.61
  4. Step 4: Simplify right side
    71,635.79x = 3,935,102,850.81
  5. Step 5: Solve for x
    x = 3,935,102,850.81/71,635.79
  6. Step 6: Final answer
    x = 54,932.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.